import io

import pandas as pd


data = io.StringIO(
"""
student_id,grade
1045,"a"
2391,"b"
8723,"c"
1092,"a"
1045,"a"
1045,"a"
1045,"a"
1045,"a"
1045,"a"
1045,"a"
1045,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
1045,"a"
1045,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
2391,"b"
8723,"c"
1092,"a"
"""
)

grades = pd.read_csv(data, verbose=True, engine="c")
